Wetherby will inspect at 3pm today ahead of tomorrow's meeting.
The West Yorkshire venue had largely escaped the worst of the recent cold snap, but clerk of the course Jonjo Sanderson reports temperatures to have taken a steep drop on Thursday evening. The track is now frozen in places and Sanderson will assess conditions this afternoon.
He said: "We were at minus 6C from about 5am until 8am and we're now at minus 4C. It's been freezing since 9pm and we are forecast anything from 0C to 1C or 2C at best today, but there is a rogue forecast saying we could get to 4C."
Sanderson added: "If that's right, it would give us the opportunity to reassess the situation in the morning. We are generally forecast minus 4C overnight, but it could go as low as minus 5C, 6C or even 7C which would scupper us."
